Process for preparing a novel formulation of rimsulfuron and use of the same

A method for imparting hydrolysis resistance to a herbicidal composition comprising:

• providing a herbicide consisting essentially of rimsulfuron in an amount of between 20.4% and 40.8% by weight of the composition, comprising adding to the herbicidal composition a hydrolysis resistance agent of one or more 2-isoxazoline-3-carboxylic acid derivatives having a formula (I)
• wherein
• R1 is phenyl which is unsubstituted or substituted by one or more radicals selected from the group consisting of halogen, cyano, nitro, amino, (C1-C4)haloalkyl, (C1-C4)haloalkoxy, (C1-C4)alkoxy, mono(C1-C4)alkyl-amino, di(C1-C4)alkyl-amino, (C1-C4)alkylthio and/or (C1-C4)alkylsulfonyl,
• R2 is (C1-C6)alkyl, (C3-C6)cycloalkyl or phenyl, each of the 3 last-mentioned radicals is unsubstituted or substituted by one or more radicals selected from the group consisting of halogen, cyano, nitro, amino, (C1-C4)haloalkyl, (C1-C4)haloalkoxy, (C1-C4)alkyl, (C1-C4)alkoxy, mono(C1-C4)alkyl-amino, di(C1-C4)alkyl-amino, (C1-C4)alkylthio and/or (C1-C4)alkylsulfonyl,
• R3 is hydrogen or a hydrocarbon radical having 1 to 18 C atoms which is unsubstituted or substituted by one or more radicals (C1-C6)alkyl,
• wherein the hydrolysis resistance agent is between 4.08% and 20.4% by weight of the composition and the hydrolysis resistance agent agent to the rimsulfruon is in a range of about 10:1to about 1:10, and
• whereby the hydrolysis agent resistance agent in the composition protects the rimsulfuron from water and moisture in the composition and inhibits the hydrolysis of the rimsulfuron in the composition and maintains the stability of the rimsulfuron in the composition.